<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />
    <!-- 加载中 -->
    <van-loading size="24px" color="#1989fa" v-if="Object.keys(artObj).length===0">文章加载中ing...</van-loading>
    <!-- 文章+评论 -->
    <div v-else>
      <!-- 文章信息区域 -->
      <div class="article-container">
        <!-- 文章标题 -->
        <h1 class="art-title">{{ artObj.title }}</h1>
        <!-- 用户信息 -->
        <van-cell
          center
          :title="artObj.aut_name"
          :label="formatDate(artObj.pubdate)"
        >
          <template #icon>
            <img :src="artObj.aut_photo" alt="" class="avatar" />
          </template>
          <template #default>
            <div>
              <van-button
                type="info"
                size="mini"
                v-if="artObj.is_followed"
                @click="followedFn(true)"
              >
                已关注
              </van-button>
              <van-button
                icon="plus"
                type="info"
                size="mini"
                plain
                v-else
                @click="followedFn(false)"
              >
                关注
              </van-button>
            </div>
          </template>
        </van-cell>
        <!-- 分割线 -->
        <van-divider></van-divider>
        <!-- 文章内容 -->
        <div class="art-content" v-html="artObj.content"></div>
        <!-- 分割线 -->
        <van-divider>End</van-divider>
        <!-- 点赞 -->
        <div class="like-box">
          <van-button
            icon="good-job"
            type="danger"
            size="small"
            v-if="artObj.attitude === 1"
            @click="loveFn(true)"
          >
            已点赞
          </van-button>
          <van-button
            icon="good-job-o"
            type="danger"
            plain
            size="small"
            v-else
            @click="loveFn(false)"
          >
            点赞
          </van-button>
        </div>
      </div>
      <!-- 文章评论 -->
      <div>
        <CommentList></CommentList>
      </div>
    </div>
  </div>
</template>

<script>
import { detailAPI, userFollowedAPI, userUnFollowedAPI, likeArticleAPI, unlikeArticleAPI } from '@/api'
import { timeAgo } from '@/utils/date.js'
import CommentList from '@/views/ArticleDetail/CommentList.vue'
export default {
  name: 'DetaiL',
  components: { CommentList },
  data () {
    return {
      artObj: {}
    }
  },
  async created () {
    const res = await detailAPI(this.$route.query.art_id)
    this.artObj = res.data.data
    // console.log(this.artObj)
  },
  methods: {
    formatDate: timeAgo,
    // 关注/取关->作者
    followedFn (bool) {
      if (bool === true) { // 点击已关注（业务逻辑：取关）
        this.artObj.is_followed = false
        userUnFollowedAPI(this.artObj.aut_id)
      } else { // 点击关注（业务逻辑：关注）
        this.artObj.is_followed = true
        userFollowedAPI(this.artObj.aut_id)
      }
    },
    // 点赞/取消点赞->文章
    async loveFn (bool) {
      if (bool === true) { // 点击 已点赞（业务逻辑：取消点赞）
        this.artObj.attitude = 0
        await unlikeArticleAPI(this.artObj.art_id)
      } else { // 点击 点赞（业务逻辑：点赞）
        this.artObj.attitude = 1
        await likeArticleAPI(this.artObj.art_id)
      }
    }
  }
}
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
.van-loading {
  text-align: center;
  padding-top: 50px;
}
</style>
